MEXICO CITY (Reuters) – Rescue workers scrabbled through rubble as dawn broke on Wednesday, searching for dozens of children feared buried beneath a Mexico City school, among hundreds of buildings destroyed by the country’s most lethal earthquake in a generation.

The magnitude 7.1 quake on Tuesday killed at least 217 people, nearly half of them in the capital, 32 years to the day after a devastating 1985 quake. The disaster came as Mexico was still reeling from a powerful tremor that killed nearly 100 people in the south of the country less than two weeks ago.

Among the twisted concrete and steel ruin of the Enrique Rebsamen school, soldiers and firefighters found the bodies of at least 22 children and two adults, while another 30 children and 12 adults were missing, President Enrique Pena Nieto said. The school is for children aged 3 to 14.

Hundreds of emergency workers spent the night pulling rubble from the ruins of the grade school with their bare hands under the glare of floodlights. Three survivors were found at around midnight as volunteer rescue teams known as “moles” crawled deep under the rubble.

On Wednesday morning, the workers said a teacher and two students had sent text messages from within the rubble. Parents clung to hope that their children were alive.

“They keep pulling kids out, but we know nothing of my daughter,” said 32-year-old Adriana D‘Fargo, her eyes red, who had waiting for hours for news of her seven-year-old.

The earthquake toppled dozens of buildings, tore gas mains and sparked fires across the city and other towns in central Mexico. Falling rubble and billboards crushed cars.

In a live broadcast, one newsreader had time to say “this is not a drill,” before weaving his way out of the buckling studio.

Parts of colonial-era churches crumbled in the state of Puebla, where the U.S. Geological Survey (USGS) put the quake’s epicenter some 100 miles (158 km) southwest of the capital, at a depth of 51 km (32 miles).

As the earth shook, Mexico’s Popocatepetl volcano, visible from the capital on a clear day, had a small eruption. On its slopes, a church in Atzitzihuacan collapsed during mass, killing 15 people, Puebla Governor Jose Antonio Gali said.

In Rome, Pope Francis told pilgrims he was praying for the victims, the wounded, their families and the rescue workers in the majority Catholic country. “In this moment of pain, I want to express my closeness and prayers to all the beloved Mexican people,” he said.

U.S. President Donald Trump said in a tweet: “God bless the people of Mexico City. We are with you and will be there for you.”

NIGHT SEARCHES

Residents of Mexico City, a metropolis of some 20 million people, slept in the streets while authorities and volunteers distributed food and water at tented collection centers.

Search and rescue operations are carried out at the site of a collapsed building in Condesa, Mexico City.

Rafael Arias/Social Media/via REUTERS

Other volunteers, soldiers and firefighters formed human chains and dug with hammers and picks to find dust-covered survivors and dead bodies in the remains of apartment buildings, schools and a factory.

Some volunteers in Mexico City expressed frustration at the disorganization among military and civilian emergency services, which competed over who would lead the rescue efforts.

“There is so much bureaucracy and so many obstacles in the way of getting these kids out alive,” said Alfredo Perez, 52, a freelance civil engineer, who arrived at the Enrique Rebsamen school in the early hours of the morning to help.

The middle-class neighborhood of Del Valle was hit hard, with several buildings toppling over on one street. Reserve rescue workers arrived late at night and were still pulling survivors out early Wednesday.

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With power out in much of the city, the work was carried out with flashlights and generators. Rescue workers requested silence as they listened for signs of life.

Moises Amador Mejia, a 44-year-old employee of the civil protection agency, worked late into the night looking for people trapped in a collapsed building in Mexico City’s bohemian Condesa neighborhood.

“The idea is to stay here until we find who is inside. Day and night.”

In Obrera, central Mexico City, people applauded when rescuers managed to retrieve four people alive, with cheers of “si se puede” — “yes we can” — ringing out.

Volunteers arrived throughout the night, following calls from the civil protection agency, the Red Cross and firefighters.

While the USGS said on Tuesday that 11 aftershocks were registered following the initial quake at around lunchtime on Tuesday, the most powerful measuring 4.9. The temblors were less frequent and smaller than those after the earthquake in southern Mexico this month.

The quake killed 86 people in the capital by early Wednesday morning, according to Civil Protection chief Luis Felipe Puente, fewer than he had estimated earlier. In Morelos State, just to the south, 71 people died, with hundreds of homes destroyed. In Puebla at least 43 died.

Another 17 people were reported killed in the states of Mexico, Guerrero and Oaxaca. The governor of Morelos state declared 5 days of mourning.

As many as 4.6 million homes, businesses and other facilities lost electricity, according to national power company Comisión Federal de Electricidad, including 40 percent of homes in Mexico City.

“We’ve re-established (power) to 90 percent of the areas affected by the earthquake,” Jaime Hernandez, chief executive officer of national electricity company CFE, told broadcaster Televisa early Wednesday morning.